Many animals rely on their to alert them about changes in temperature. pain receptors mechanoreceptors photoreceptors thermoreceptors

What process is believed to be responsible for the formation of the grand canyon? a) diverging tectonic plates b) converging tectonic plates c) erosion over a long period of time d) caving in of the ground due to erosion

Animations and transitions are added from the

Weak stimulus will cause a weak action potential. the stronger the stimulus, the stronger the action potential. a. true b. false